JP2001279881A - Roof substrate member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roof substrate member having resistance against slip, water repellency, moisture permeable waterproof, and watertightness and allowing safe work even at a high place. SOLUTION: In the roof substrate member composed of three layers, namely, a nonslip layer, a moisture permeable waterproof watertight layer, and a protection layer, a coefficient of slip resistance of the substrate member is 0.1 or more, a degree of water repellency is 60 points or more, and water vapor permeability is 1,000 to 15,000 g/m2/24 hr, waterproof measured based on JIS-L1092 is 500 to 10,000 mm, and any layer of the substrate member carries carbon powder agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof base material having excellent workability, and more particularly, to a roof base material comprising three layers of a non-slip layer, a moisture-permeable waterproof layer, and a protective layer.

[0002]

2. Description of the Related Art In recent years, a highly airtight construction method has been implemented in which a sheet having moisture permeability and waterproofness is pasted to prevent the invasion of wind and rain into a room, and to escape water vapor in a room to prevent dew condensation in a wall structure. Have been. However, only the roof ground has no moisture permeability, for example, asphalt felt has been provided to prevent rainwater from entering.

Japanese Unexamined Patent Publication (Kokai) No. 2-269277 discloses a roofing and roofing material excellent in waterproofness, in which a stretchable and sticky resin is applied to the surface of a cloth, and a resin having low adhesiveness is further applied thereon. However, since this roof underlaying material is formed from a plurality of resin layers, it lacks moisture permeability and leaves room for improvement in watertightness when nailed.

[0004] As an improved base material as described above, Japanese Patent Application Laid-Open No. Hei 4-309649 discloses a construction in which a stretchable and adhesive resin is applied to the surface of a nonwoven fabric or a microporous film to provide a watertight seal. Although the base material is disclosed, if covered with such a base material, it may be damaged by the condition of the base plate, if the base material is wet such as when working in rainy weather, it may slip, It has been pointed out as a problem. There is also a problem that the moisture permeability is not sufficient.

Further, Japanese Patent Application Laid-Open No. 9-291657 discloses that a water-impermeable chlorine-containing polymer film having ventilation holes is provided on both sides of a water-repellent and moisture-permeable film, and a ventilation film is provided on the other surface. It discloses a composite waterproofing sheet for construction and civil engineering that has properties and cushioning properties, but when used as a base material, the film will not be damaged due to the condition of the surface such as a covered base plate, but it will not work in rainy weather. Lack of anti-slip properties when the base material is wet, such as at times. In addition, moisture permeability is not sufficient, and it is conceivable that dew forms and causes mold and the like.

[0006]

In the base material represented by asphalt felt, there is no moisture permeability.
Moisture is trapped in the back of the roof, especially in winter, when water drops are generated, and the water content of the base plate becomes 80% or more. In the rainy season, the base plate (wood or wood) exposed to high humidity for a long time The water content of the plywood is 20% or more, and the environment becomes easily rotten. In addition, even if the above-mentioned roof base material is not a roof base material but a moisture-permeable roof base material, the moisture permeability cannot be said to be sufficient, and the work in high places, particularly in rainy weather, lacks safety.

Accordingly, an object of the present invention is to have sufficient moisture permeability and waterproofness, maintain watertightness even when nails are driven, have good handling and workability, do not damage the sheet at the time of construction, and of course, when the weather is fine, Another object of the present invention is to provide a roof base material that can be safely operated even in rainy weather and has high productivity as a sheet material.

[0008]

Means for Solving the Problems The present invention has been made as a result of intensive studies to solve the above-mentioned problems, and has reached the present invention. The structure thereof is as follows.

That is, according to the present invention, there is provided (1) a roof base material composed of three layers of a non-slip layer, a moisture-permeable waterproof and water-tight layer, and a protective layer, wherein the base material has a slip resistance coefficient of 0.1 or more; Water degree is 60 points or more, and moisture permeability is 1,000 to 15,
000g ^/ m is 2 / 24hr, JIS-L1092
The waterproofness measured based on 500 to 10,000 mm
, And a carbon powder is carried on one of the layers of the base material.

(2) The anti-slip layer includes a nonwoven fabric, woven fabric or knitted fabric of natural or synthetic fiber having a basis weight of 10 to 100 g / m ² on which a carbon powder is supported as a base material. Including at least one synthetic resin selected from polyacrylic and polyurethane,
The roof base material according to (1), characterized in that it contains at least one synthetic resin selected from a fluorine-based, silicon-based, and wax-based repellent.

Further, (3) the roof base material according to (2), wherein the anti-slip agent is unevenly distributed on the outermost side of the anti-slip layer.

(4) The moisture-permeable and waterproof watertight layer is a synthetic resin film of at least one thermoplastic elastomer selected from microporous polyethylene, polypropylene, polyvinyl alcohol, and polyurethane, and has a thickness of 50 to 50%. 300 μm, Young's modulus is 1 to 30 kg
/ Mm ² in the roof base material of (1).

(5) The protective layer according to (1), wherein the protective layer is a nonwoven fabric, a woven fabric or a knitted fabric of natural and / or synthetic fibers having a basis weight of 10 to 100 g / m ² carrying a carbon powder. Exists in roofing material.

As described above, the roof base material of the present invention, in which the moisture-permeable waterproof and water-tight layer is protected by the non-slip layer and the protective layer, is moisture-permeable and waterproof, water-tight, and water-repellent. In this case, it is a comfortable roofing base material that does not impair the anti-slip property, can be safely operated even at high altitudes, and is health-friendly.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the roof base material of the present invention will be specifically described. First, the non-slip layer will be described.
The base material of the anti-slip layer is breathable and has a basis weight of 10
If it is a fabric of １００100 g / m ² , it may be a nonwoven fabric made of spunbond or needle punch, or a woven or knitted fabric. The material may be natural fiber or synthetic fiber, and there is no limitation. It is preferable that the base material of the present invention is provided with a carbon powder. A carbon powder is a powder material mainly composed of carbon, such as charcoal powder, and has an environmental improvement effect such as humidity control and deodorization. Specifically, pine chips made of carbonized pine chips made of cutting waste such as red pine and the like are pulverized, pine chip charcoal powder obtained by pulverizing coal, coke produced by using a pitch obtained by distilling coal tar or petroleum, that is, pitch. Pitch coke powder, which is a coke powder, pine cone coal powder obtained by carbonizing pine cone, and further, bincho coal powder, white coal powder, and the like are used. As a method for carrying the same, ordinary means is employed. For example, there is a method in which a treatment liquid in which the above-mentioned carbon powder is dispersed in a solvent together with a dispersant is prepared, and applied to a substrate by a padding method, a coating method, a gravure method, or the like. Further, antibacterial agents and fungicides may be added in some cases.

As the anti-slip agent, any anti-slip agent may be used, and examples thereof include a rubber-like agent and a resin. Specifically, there are polyamide type, polyester type, polyolefin type, synthetic rubber type, acrylic type, urethane type, epoxy type and asphalts.

Examples of the method for applying the anti-slip agent include a coating method, a gravure roll method, a relief printing method, and a screen printing method. The application area of the anti-slip agent may be the entire surface as long as the air permeability is not impaired, or may be the minimum area where the anti-slip effect is exhibited.

The water repellent applied to the surface of the anti-slip layer may be any one which can exhibit a water repellency of 60 points or more, and includes fluorine, silicon and wax. As a method of applying, a padding method, a gravure roll method,
Spray method and the like can be mentioned.

Next, the moisture permeable waterproof and watertight layer will be described. The purpose of the moisture-permeable waterproof watertight layer is to prevent rainwater from entering from outside and adjust the humidity inside and outside the house when used as an inner wall material or a roof base material.

[0020] As the film of the basic material of the moisture-permeable waterproof watertight layer, polyethylene, polypropylene, polyurethane,
Synthetic polymers such as polyvinyl alcohol and urethane-based thermoplastic elastomers can be mentioned, and microporous polyethylene having good processability and high moisture permeability is preferably used. 2,000 g / m ² as moisture permeability
/ 24 hr or more, preferably 6,000g ^/ m ^2/24
hr or more. Regarding the waterproofness of the film, no matter how much the film is exposed to the wind and rain, there is no problem if the water pressure is 500 mm or more. By incorporating the film into the roof base material, the water resistance is further improved. Also, from the point of water tightness,
Those having a size of 50 μm or more are required, and those having a size of 50 to 300 μm are used. Preferably 80-150 μm is used. Further, the Young's modulus is preferably 1 to 30 kg / mm ² from the viewpoint of water tightness and handleability, and is preferably 20 to 3 kg / mm ^2.
Those having 0 kg / mm ² are particularly preferred. As the protective layer, a nonwoven fabric made of spun bond or needle punch, or a woven fabric or knitted fabric may be used as long as the fabric has air permeability and a basis weight of 10 to 100 g / m ² . The material may be natural fiber or synthetic fiber, and there is no limitation.

As a method of laminating the three layers of the anti-slip layer, the moisture-permeable waterproof water-tight layer, and the protective layer, there are a dry lamination method, a wet lamination method, a heat lamination method and the like. In the adhesive,
There is no problem with any resin such as a solvent-based resin, an emulsion-based resin, or the like, but it is necessary to select an adhesive strength of 0.5 kg / inch or more.

The moisture permeability of the entire three-layered roof base material is 1000 g / m 2/24 hr or more, preferably ² g / m 2/24 hr, in order to prevent winter water droplets on the field board and improve the environment during the rainy season. requires 000g ^/ m 2 ^/ 24hr or more. In addition, the thickness of the laminated product is 0.5 to
1.5 mm is appropriate.

[0023]

Next, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not necessarily limited to the following Examples.

The method for measuring various characteristics described in the present invention is as follows.

[Adhesive strength waterproofing] JIS L 1089
5.10.2 (peel strength). Unit K
g.

[Young's modulus] According to JIS L 1096
It was determined according to 6.12 (tensile strength and elongation).

[Waterproof] JIS L 1092-5.
1.1 Determined by the B method (test method for waterproofness of textile products). Unit: mm.

[Moisture permeability] 4.1 of JIS L 1099
It was determined by Method A (test method for moisture permeability of textiles). Unit g ^/ m 2 ^/ 24hr.

[Anti-slip property] JIS A 1454 6.1
2 (slipperiness test). In addition, the sliding piece is a polyester spunbond nonwoven fabric made by Unitika (20557F
LV) A basis weight of 55 g / m ² was used.

[Water repellency] JIS L 1092 5.2
(Water repellency test).

[Watertightness] An iron round nail N38 was driven into a 9 mm board (plywood) through various structures.
In 5430 5.6 (permeability test), the nail column waterproofness was evaluated based on the change in height after leaving the water column at an initial height of 250 mm for 24 hours.

[0032]

Example 1 The first layer, which is a non-slip layer, was prepared by using a nonwoven polyester fabric having a basis weight of 25 g / m ² (manufactured by Unitika Co., Ltd.) as a substrate, 70% by weight of pine chip charcoal powder, 15% by weight of pitch coke powder, And 20 g / l of carbon powder comprising 15% by weight of pine charcoal powder together with 2 g / l of Demol NL (manufactured by Kao Corporation, dispersant) and 15 g / l of seikaprene (binder manufactured by Dainichi Seika Co., Ltd.) After padding and drying the treated carbon powder solution, an acrylic resin TOA ACRON XE-3491 (manufactured by Toagosei Co., Ltd.) was used as an anti-slip agent at a solid content of 10 g / d by a roller printing method capable of applying dots. After applying m ² and drying, a 5% aqueous solution of a fluorine-based water repellent Asahigard AG-710 (manufactured by Asahi Glass Co., Ltd.) was applied at 10 g / m ² using a gravure roll to form a non-slip layer. The second layer, which is a moisture-permeable waterproof water-tight layer, is a 50 μm polyethylene film PH50 having moisture-permeable waterproof properties.
Using [Breathable 7,000g ^/ m 2 ^/ 24hr] (manufactured by Tokuyama Corporation). The third layer, which is a protective layer, has a basis weight of 2
5 g / m ² polyester nonwoven fabric (manufactured by Unitika Ltd.)
It was used. The lamination from the first layer to the third layer was performed by a so-called dry lamination method using a phthalic acid-based polyester resin adhesive, and the non-bonded portion was adjusted to 60%. At this time, the coating amount of the phthalic acid-based polyester resin was 3 in solid content.
g / m ² . FIG. 1 shows a cross-sectional view of a roof base material obtained by the above configuration. As shown in Table 2,
When the roof base material obtained in the present invention was evaluated, good results were obtained.

[0033]

EXAMPLE 2 A non-slip layer as a first layer was formed on a polyester nonwoven fabric (produced by Unitika Ltd.) with a basis weight of 25 g / m ² as a base material, and an acrylic resin TOA ACRON XE-3491 (Toa Gosei Co., Ltd.) as a lubricant. )) By a roller printing method that can be applied in the form of dots.
After applying 0 g / m ^2, a 5% aqueous solution of a fluorine-based water repellent Asahigard AG-710 (manufactured by Asahi Glass Co., Ltd.) was applied as a water repellent by gravure roll at 10 g / m ² to form a non-slip layer. Created. The moisture-permeable, waterproof and water-tight layer as the second layer was prepared in the same manner as in Example 1. The protective layer serving as the third layer is composed of a polyester nonwoven fabric having a basis weight of 25 g / m ² (manufactured by Unitika Ltd.), pine chip charcoal powder 70% by weight, pitch coke powder 15% by weight, and pine nut charcoal powder 15% by weight. A carbon powder treatment liquid prepared in the same manner as in Example 1 consisting of 20 g / l of carbon powder was padded and dried. Also, the lamination of the first to third layers was performed by the dry lamination method in the same manner as in Example 1. FIG. 2 shows a cross-sectional view of the three-layer structure obtained by the above configuration. As shown in Table 2, good results were obtained as a roof base material.

[0034]

Comparative Example 1 The first and third layers had a basis weight of 25 g / m ^2.
Polyester nonwoven fabric (Unitika Ltd.), and the second layer of polyethylene film PH50 of 50μ with moisture permeable waterproof [breathable 7,000g ^/ m 2 ^/ 24hr]
(Manufactured by Tokuyama Corporation) was used. Lamination of the first and third layers was performed in the same manner as in Example 1. FIG. 3 shows a cross-sectional view of the three-layer structure obtained by the above configuration.

The compositions of Examples 1 and 2 and Comparative Example 1 are shown in Table 1.
Table 2 shows the respective performance evaluations and the overall evaluation as a roof base material.

[0036]

[Table 1]

[0037]

[Table 2]

[0038]

EFFECTS OF THE INVENTION The roof base material of the present invention has a water-repellent and anti-slip property on the surface of the structure, so that it is safe not only on a sunny day but also on a roof where there is no rainwater even on a rainy day. Can now be constructed. Even after a few years after construction, the structure's moisture permeability allows moisture inside the house to escape to prevent dew condensation, and its waterproofness and nail hole sealing prevent rainwater from entering from outside. It was able to prevent the corrosion of the roof base plate and the rafters, and also prevented the leakage of rainwater, and could be suitably used as a roof base material. Furthermore, among these effects, the reason why the nail hole sealing property can be exhibited is that the gap generated between the nail and the three-layer structure is corrected by the elastic force of the synthetic resin sheet used for the moisture-permeable waterproof layer. Can be considered.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment in which an anti-slip agent is applied in a dot shape and a carbon powder is applied to a base cloth of an anti-slip layer.

FIG. 2 is a cross-sectional view showing one embodiment in which an anti-slip agent is applied in a dot shape and a carbon powder is applied to a protective layer.

FIG. 3 is a cross-sectional view showing a conventional roof base material.

[Explanation of symbols]

 1. 1. polyester nonwoven fabric Anti-slip agent 3. Hot melt adhesive 4. 4. Moisture permeable waterproof film Carbon powder

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 4F100 AA37A AA37B AA37C AK03A AK04B AK07B AK17A AK21B AK25A AK26A AK41A AK44G AK46A AK51B AK52A JB06A JB16B JD04B JD05B JK07B JK16A JL00 JL07 YY00A YY00B YY00C

Claims (5)

[Claims] An anti-slip layer, a moisture-permeable and water-tight layer, and a protective layer.
In a roof base material composed of layers, the base material has a slip resistance coefficient of 0.1 or more and a water repellency of 60 points or more,
Moisture permeability 1,000~15,000g ^/ m 2 ^/ 24hr
A roof base material having a waterproofness of 500 to 10,000 mm measured based on JIS-L1092, and a carbon powder carried on any layer of the base material. 2. A non-slip layer comprising a nonwoven fabric, woven fabric or knitted fabric of a natural or synthetic fiber having a basis weight of 10 to 100 g / m ² on which a carbon powder is supported as a base material, and a polyamide or polyacrylic as a non-slip agent. And at least one synthetic resin selected from a fluorine-based, silicone-based, and wax-based water repellent agent.
Roof base material as described. 3. The roof base material according to claim 2, wherein the anti-slip agent is unevenly distributed on the outermost side of the anti-slip layer. 4. The moisture-permeable and water-tight layer is a synthetic resin film of at least one thermoplastic elastomer selected from microporous polyethylene, polypropylene, polyvinyl alcohol, and polyurethane, and has a thickness of 50 to 3 mm.
The roof base material according to claim 1, wherein the roof base material has a thickness of 00 μm and a Young's modulus of 1 to 30 kg / mm ² . 5. The method according to claim 1, wherein the protective layer has a basis weight supporting the carbon powder.
Nonwoven fabric of natural and / or synthetic fibers of 100 g / m ² ,
The roof base material according to claim 1, which is a woven or knitted fabric.